Last year, sonic wizard Sam Battle transformed an old kids bike into a rolling synthesizer. The faster the Synth Bike 2.0 was pedaled, the quicker the beat. Now he’s updated the design for a Science Gallery Dublin exhibit, plonking an analog synth and drum sequencer between the handlebars of a BMX. As with the earlier hack, the faster the rider pedals, the faster the tempo – but this time, the Synth Bike 3.0 goes nowhere fast.